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Wavelength conversion through plasmon-coupled surface states

Author

Listed:
  • Deniz Turan

    (University of California)

  • Ping Keng Lu

    (University of California)

  • Nezih T. Yardimci

    (University of California)

  • Zhaoyu Liu

    (Iowa State University)

  • Liang Luo

    (Iowa State University)

  • Joong-Mok Park

    (Iowa State University)

  • Uttam Nandi

    (Technical University Darmstadt)

  • Jigang Wang

    (Iowa State University)

  • Sascha Preu

    (Technical University Darmstadt)

  • Mona Jarrahi

    (University of California)

Abstract

Surface states generally degrade semiconductor device performance by raising the charge injection barrier height, introducing localized trap states, inducing surface leakage current, and altering the electric potential. We show that the giant built-in electric field created by the surface states can be harnessed to enable passive wavelength conversion without utilizing any nonlinear optical phenomena. Photo-excited surface plasmons are coupled to the surface states to generate an electron gas, which is routed to a nanoantenna array through the giant electric field created by the surface states. The induced current on the nanoantennas, which contains mixing product of different optical frequency components, generates radiation at the beat frequencies of the incident photons. We utilize the functionalities of plasmon-coupled surface states to demonstrate passive wavelength conversion of nanojoule optical pulses at a 1550 nm center wavelength to terahertz regime with efficiencies that exceed nonlinear optical methods by 4-orders of magnitude.

Suggested Citation

  • Deniz Turan & Ping Keng Lu & Nezih T. Yardimci & Zhaoyu Liu & Liang Luo & Joong-Mok Park & Uttam Nandi & Jigang Wang & Sascha Preu & Mona Jarrahi, 2021. "Wavelength conversion through plasmon-coupled surface states," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24957-1
    DOI: 10.1038/s41467-021-24957-1
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    Cited by:

    1. Wenting Wang & Ping-Keng Lu & Abhinav Kumar Vinod & Deniz Turan & James F. McMillan & Hao Liu & Mingbin Yu & Dim-Lee Kwong & Mona Jarrahi & Chee Wei Wong, 2022. "Coherent terahertz radiation with 2.8-octave tunability through chip-scale photomixed microresonator optical parametric oscillation," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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